Switch stand



Aug/11,1925.

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Patented Aug. 11, 1925.

uniti-:n i stares WILLIAMS, BRAIDLEY, OF CONNELLSVILLE, PENNSYLVANIA;

SWITCH STAND.

Application filed May 12, 1925.

To all whom t may concern.'

Be it known that I, `WILLIAM S. BRADLEY, a citizencf the United States, residing at Coniiellsville, infthe county of Fayette and State of Pennsylvania, have invented certain, new:y and useful Improvements inY Switch Stands, of'which the following is a specilication.

This invention relates to switch stands, but more particularly to adjustable cranks for switchfstands, and has for its object to provide, ina manner as hereinafter set forth, acrankforiregulatingfand obtaining a wide area of adjustment with-respect to a switch point.

A further object of the invention is to provide, in aimanner as hereinafter. set. forth, an adjustablel crank fon switch points to compensate forthewear in the parts of the switch` stand and` for the wear on the rails ofthe switch, andffurther tof` provide apositive. lock for; the crank arml after adjust- `ment. j

Further objects.. of the invention are to 25 provide, in aimanner ashereinafterset forth,

an adjustable crankfor the: purpose referred to, which issimp-le in itsconstruction, strong, durable, compact, thoroughlyelflcient in its use, readily adjustable, 'Y conveniently installed, and comparatively; inexpensive to setA up.

With` theV forgoingv and other: objects in view, theinvention= consists of the novel construction, combination and arrangement of' parts, as hereinafter more specifically described and illustrated in the accompanying drawings, `wherein is shown an embodiment of the invention, but ity is to be' understood that changes, variations and modifications can be resortedto which come within the scope of the claims hereunto appended.

In the drawingsy whereinl like reference characters denote corresponding parts throughout the several views z- Figure 1 is a top plan view of a crank arm, in accordance with this invention.

Figure 2 is a side elevation thereof.

Figure 3 is a section on line 3 3, Figure .Referring to the drawings in detail, 1

Serial No. 29,764.`

this invention, and which is of the duplex type.' e

The crankaim comprises a hub 2 for the reception of the lower end of the shaft 1. rIhe body of the hub 2 is foi-ined with pairs of diametrically extendingl openings 3. The Openings of each pair align, and extending through a pair of aligning openings, as well as through the shaft 1, is a hold-fast means for coupling the hub to the shaft, The hold-fast means preferably` consists of a headed bolt a, having,` a cotter pinv 5 extending therethrough, but it is obvious that any suitable ine-ans can be employed for coupling the hub and shaft together.

Formed integral with the hub 2 isa pair of oppositely extending cranks 6,` i@which are disposed in the same plane and are arranged between the transverse center and lower' end of the hub. As each of the cranks are of the saine construction, but ono will be described, as the description ofpone will apply to the other. Each crank consists of a substantially oval-shaped body portion 8 of the desired length and formedv with a lengthwise extending. slot 9.

`The outer side edge throughout of the body portion Sis toothed, as at 10. Formed integral with the upper and'lower faces of the body portion 8 are respectively lengthwisc disposed offsets 11, 12, extending from one end to the other end of said body portion,A and flush with the` inner side edge of the latten One edge of each offset is toothed, as at l13, and such toothed edge is spaced from the slot 9. Each end of the toothed edge of an offset provides a fiat shoulder 14-Associated with either of the cranks (5', 7is an adjustable locking member 14 of inverted yoke-shape andV consisting of a head;15 and a pair of arms 16, 17, spaced aisubstantial distance fromv each other. The

`head 15 is rectangular in contour and the arms 16, 17 depend from the sides of the former. The width of each arm corresponds to the length of the head. rIhe thickness of each arm corresponds to the thickness of an oiset 11 or 12.

The locking member straddles the crank from the top thereof and seats in the toothed edge 10 of the crank and t-he toothed edges of the offsets, and for such purpose the lower face of the head 15 is provided with a plurality of teeth 18 and the lower end of each arm with a plurality of teeth 19. The teeth 19 on each arm preferably are two in number and are arranged centrally of the lower end of the arm. The engagement of the teeth of the member 14 with the teeth of the crank will lock said member in its adjusted position.

The arms 16 and 17 are provided respectively with openings 20, 21, through which extends a combined pivot and retaining bolt 22 for the switch rod link 2?. The link 23 is provided with a bifureated outer end 24, which straddles the crank and the member 141. The bifuraited outer end 211 of the link is apertured, as at 25, for the passage of the bolt Extending through the shank of the bolt 22 is a Cotter pin 26, which in connection with the head 27 of the bolt 22 pivotally connects the link 3 to the adjustable locking member '14. The link 23 and the member 111 are adapted to be connected to either one of the cranks 6, Y. The slot 9 is provided for the passage of the bolt Q2 whereby the member 1li willY be connected to the crank and after connection, said slot 9 permits of the lengthwise adjusting of the member lt relative to the crank. lVhen the member tft is adjusted, the link 2S is carried therewith. The member lit can be adjusted towards the outer or towards the inner end of the crank. After the member llt has been adjusted, the interengaging of the teeth on the crank with .the head 15 and the interengaging of the teeth on the oiisets with the arms 1G, 17, will lock the member le in its adjusted position.

The principal advantage of the invention is in the provision of a positive locking adjustable leverage connection between the crank arm and the switch rod link, as well as to provide Yfor a wide area of adjustment and also to set up a lock between the crank and the adjustable locking member not only interiorly of the latter, but also at its ends, under such. conditions providing a positive lock, then furthermore setting up a locking engagement between one side edge and with both faces of the crank, which acts to positively secure the adjustable locking member in adjusted position, and although the preerred embodiment of the invention is as illustrated and described, yet it is to be understood that changes in the details of construction can be had which will fall within the scope of the invention as claimed.

What I claim is l. 1n combination, av slotted crank adapted to be secured to the shaft of a switch stand and-having one side edge toothed and further having both of its faces toothed adjacent its other side edge, an adjustable locking member having toothed engagement with said toothed edge and toothed engagement with said faces for locking said member in adjusted position, and means for pivotally connecting a switch rod link to said member and t'or connecting the latter to said crank.

2. A switch arm including a pair of oppositely disposed lengthwise slotted cranks and means for mounting the arm on the shaft of a switch stand, each of said cranks having one side edge toothed and having a lengthwise extended offset on each face thereof, each of said offsets having its inner edge toothed.

3. 1n combination, a crank adapted to be secured to the shaft of a switch stand and formed with a slot, said crank further provided at one side edge with a series of teeth and on each face with a. lengthwise extending toothed offset, an adjustable yoke-shaped locking member straddling said crank and provided with teeth engaging said edge and oll'sets for locking the member in adjusted position, and means extending through said membe and slot for pivol'ally connecting a switch rod link to said member and for slidably connecting the member to the crank.

1n combination, a slotted crank provided with means for securing it to the shaft of a switch stand, said crank having one side edge toothed and each of its faces provided with teeth between said slot and the other side edge thereof, an adjustable yokeshaped locking member straddling said crank and having interiorly arranged teeth engaging with said toothed edge and further having teeth at its lower end engaging with the teeth on the faces of said crank for locking said member in adjusted position, and means extending through said member and slot for pivotally connecting a switch rod link to said member and for slidably connecting the latter to the crank.

In testimony whereof, I attix my signature hereto.

VILLIAM S. BRADL "Y 

